EVUTEC Wood S Series Sleek Impact Protection Snap Case For The iPhone 5/5S in Bamboo Contains Dupont Kevlar Fibers (Same Materials That are Used in Bullet Proof Vest to Absorb the Impact ) Each Wood S Series case is treated and polished with our specially formulated, five-layered, Evutouch Coating. 0.9 mm Thin - 5x Stronger Then Steel and lighter- Scratch Resistant Coating Our Carbon SI Wood cases are designed without any metal substances or components, allowing you to use your iPhone 6 without having to worry about interference with your wireless signals. Very Durable for such a slim case